ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Osteoporosis is a disease characterized by decreasing bone density, and is assessed by thebone mass density of cancellous bone. An X-ray method is widely used for noninvasive measurementof bone mass density [mg/cm3]. An ultrasonic method has the potential to evaluate the elasticproperties, however measured ultrasonic parameters are the slope of frequency dependent attenuation(BUA [dB/MHz]) and the speed of sound (SOS [m/s]), not the bone mass density [mg/cm3]. Inprevious study, two longitudinal waves, the fast and slow waves, were observed in cancellous bone. Inthis study, the propagation path through cancellous bone is modeled to specify the causality betweenultrasonic wave parameters and bone density. Then bone density and bone elasticity are quantitativelyformulated. A novel ultrasonic bone densitometry, prototype LD-100, have been developed. The bonedensity [mg/cm3] and the bone elasticity [GPa] are evaluated by ultrasonic parameters based on thefast and slow waves in cancellous bone using a modeling of ultrasonic wave propagation path
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.321-323.857.pdf
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